import type { DataVerificationConfig, DataVerificationResult, DataState, DataObservabilityHandler } from "./data.types";
interface TruliooSessionClient {
    authorizedPost<Req, Res>(path: string, body: Req): Promise<Res>;
    authorizedGet<Res>(path: string): Promise<Res>;
    /** Optional: GET that returns headers alongside body. Used for Retry-After. */
    authorizedGetWithHeaders?<Res>(path: string): Promise<{
        body: Res;
        headers: Record<string, string>;
    }>;
}
export declare const DATA_ENDPOINTS: {
    readonly verify: "/transactions/data/verify";
    readonly poll: (txnId: string) => string;
    /** Result endpoint -- SDK NEVER calls this. PII isolation boundary. */
    readonly result: (txnId: string) => string;
    /** Allowed paths for session client creation (excludes result). */
    readonly allPaths: string[];
};
/**
 * Data Verification module for Web -- Trulioo SDK.
 *
 * ## Flow
 * 1. Call `verify(config)` to submit PII for verification.
 * 2. SDK internally polls GET /transactions/{id}/data until terminal.
 * 3. Returns DataVerificationResult with outcome -- no PII.
 *
 * ## PII Safety
 * The SDK does NOT call /transactions/{id}/data/result.
 * PII is submitted once and never retrieved by the SDK.
 */
export declare class TruliooData {
    private client;
    private _state;
    private stateListeners;
    private abortController;
    private observabilityHandler;
    constructor(client: TruliooSessionClient);
    /** Set observability handler for structured log events. */
    setObservabilityHandler(handler: DataObservabilityHandler | null): void;
    get state(): DataState;
    onStateChange(listener: (state: DataState) => void): () => void;
    private setState;
    private emit;
    /**
     * Submit data for KYC verification and poll until terminal.
     *
     * @param config Verification configuration with PII fields and country code.
     * @returns Terminal result with outcome and match status -- no PII returned.
     */
    verify(config: DataVerificationConfig): Promise<DataVerificationResult>;
    /** Reset state to IDLE. Valid from any state. Cancels in-flight polling. */
    reset(): void;
    private post;
    private getWithHeaders;
}
export {};